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Title: Improved pitting corrosion behaviour of electrodeposited nanocrystalline Ni–Cu alloys in 3.0 wt.% NaCl solution
Authors: GHOSH, SK
Keywords: Nickel Alloys
Sodium Compounds
Transmission Electron Microscopy
Issue Date: 2006
Publisher: Elsevier
Citation: Journal of Alloys and Compounds 426(1-2), 235-243
Abstract: Nanocrystalline (nc) Ni–Cu alloys have been electrodeposited by using pulse current (PC) as well as direct current (dc) electrolysis. X-ray diffraction (XRD) and transmission electron microscopy (TEM) were employed to characterise the deposits. High-resolution electron microscopic (HREM) examination revealed that deposited nc alloys were dense in nature. Corrosion behaviour of both nc as well as Monel-400 were compared in 3.0 wt.% NaCl solution and was found that corrosion current density (icorr) of nc alloys were superior to Monel-400. Both optical as well as scanning electron microscopic (SEM) examination of the corroded surface revealed a well-defined pitting type of attack for Monel-400 unlike nc alloys; akin to homogeneous corrosion.
URI: 10.1016/j.jallcom.2005.12.094
ISSN: 0925-8388
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